Ok, so … Let me explain. 
A lot of people have approached us asking about which cables they should use for their Four/Rytm, and then wondered why we don’t provide fitting cables ourselves. So naturally, we felt the need to make this.
The CV/Audio Cable Kit is basically our own take on the Y-cable.
However, when designing the cable we felt like we didn’t want to make just a Y-splitter, that is already widely available, and will still need more adapters for use with all our gear. Instead, we thought of making something that would be equally useful for any of our machines (and other gear) in different ways.
The TRS jack is a threaded 3.5mm jack, and comes with a standard threaded (headphone) 6.3mm adapter, which allows the user to connect it to both our combined CV outputs, and the combined voice outputs on Analog Four/Rytm as well as mobile devices, computers and so on.
The TRS signal is then split into two pairs of TR (mono) connections. There are two jacks per signal (Tip, Ring), one 3.5mm jack and one 6.3mm jack.
The point of this is to be able to use the same splitter for a wide array of different devices. For example, the 3.5mm mono jacks are of course there because of the wide spread usage and popularity of Eurorack modular systems, but also some legacy gear that features these types of connections.
The 6.3mm jacks are useful for most other gear since it’s pretty much the standard for hardware synthesizer’s outputs and inputs.
And of course, the two cables that come with are 6.3mm on one side and 3.5mm on the other, which allows you to utilize the jacks correctly for your scenario.
It’s not at all revolutionary, but it sure is handy!